This interactive R course covers everything from the basics, variables, and data types to advanced topics, such as recursion, file handling, and S3/S4 classes in R.

In today’s data-driven world, the ability to analyze large datasets is becoming a vital skill across industries. R, one of the most powerful languages for data analysis.
This interactive R course is designed for beginners, with no prior knowledge of R programming required. You will begin with fundamental concepts, such as R variables, data types in R, and basic functions like R print and R cat. As you progress, you will dive into more complex topics, including R vectors, lists, arrays, matrices, and data frames in R programming. You’ll also learn how to perform operations using arithmetic operators in R, relational operators in R, and logical operators in R. Further, the course covers advanced features like if statements in R, switch statements in R, loops in R, and recursion in R. 
Finally, you’ll gain hands-on experience with file handling in R, exception handling with try and except in R, and object-oriented programming using S3 and S4 classes in R.

Learn R

A character is basic data type.

**pi** is a reserved word in R language, but it can be also used as an **identifier**.

pi is a reserved word in R language, but it can be also used as an identifier.

**Identifiers** cannot begin with an **underscore** `_`

Identifiers cannot begin with an underscore <code>_</code>

<code>typeof()</code> is different from <code>class()</code>.

Variables in the current directory can be found using:

Variables in the current directory can be found using:

We can define strings using both double qoutes and single qoutes in R.

We can define strings using both double qoutes and single qoutes in R.

The correct method to find the length of a string is:

The correct method to find the length of a string is:

Overriding the default separator for `paste()`.

Concatenating two numbers using `paste()`.

The `sep` argument in `paste()` is used for:



The <code>sep</code> argument in <code>paste()</code> is used for:

The correct syntax for `replicate()` is 
```r
replicate(<numberOfTimes>, <stringToReplicate>)
```

The correct syntax for <code>replicate()</code> is
<pre><code class="language-r">replicate(&lt;numberOfTimes&gt;, &lt;stringToReplicate&gt;)
</code></pre>

Introduction to R

R variables

Data Structures in R

Operator in R

Conditional Statements in R

Loops in R

Function in R

Input/Output in R

Exception Handling in R

Classes in R

R Programming Challenges

Conclusion

Test Your Knowledge 1

Quiz on Variables in R Language